The company's official birthday is September 27, 1998, which is
when Google first launched its webpage.

In the 20 or so years since then, Google has changed a lot -
while the primary colors in the logo and the search engine's name
has stayed the same, the company has added a ton of new products,
including Gmail, the world's most popular webmail product, and
Android, which powers most of the world's smartphones.

Thankfully, the search page has stayed relatively minimal.

Here is what Google looked like when it first launched:

source

Screenshot

If you want the full retro experience, you can see what Google's
search results looked like back then by searching "Google
in 1998."

Here's what that looks like:

source

Screenshot

What's particularly interesting is the links to other search
engines at the bottom of the search results. Except for Yahoo and
Amazon, most of those websites are defunct these days.